<template>
  <h2>当前求和:{{ sum }}</h2>
  <button @click="sum++">点我+1</button>
  <hr>
  <h2>当前点击时鼠标的坐标为:X:{{point.x}},Y:{{point.y}}</h2>
</template>

<script>
import {ref} from "vue";
import usePoint from "../hooks/usePoint";
export default {
  name: "Demo",
  setup() {
    //数据
    let sum = ref(0);
    let point = usePoint()
    //返回一个对象（常用）
    return {
      sum,
      point
    };
  },
};
</script>